Anna and Sarah shared some buttons. Anna had 70% of what Sarah had at first. Anna then gave Sarah
25 of what she had. How many more percent did Sarah have than Anna in the end? Correct the answer to 1 decimal place.
|
Anna |
Sarah |
Comparing Anna and Sarah at first |
10x1 = 10 u |
7x1 = 7 u |
Before |
5x2 = 10 u |
|
Change |
- 2x2 = - 4 u |
+ 2x2 = + 4 u |
After |
3x2 = 6 u |
11 u |
70% =
70100 =
710The number of buttons that Anna had at first is repeated. Make the number of buttons that Anna had at first the same. LCM of 10 and 5 is 10.
Number of buttons that Sarah had in the end
= 7 u + 4 u
= 11 u
Number of more buttons that Sarah had than Anna in the end
= 11 u - 6 u
= 5 u
Number of more buttons that Sarah had than Anna in the end in percent
=
56 x 100%
≈ 83.3%
Answer(s): 83.3%